From: Avi Kivity <avi@redhat.com>
To: "Mao, Junjie" <junjie.mao@intel.com>
Cc: "'kvm@vger.kernel.org'" <kvm@vger.kernel.org>
Subject: Re: [PATCH v5] KVM: x86: Implement PCID/INVPCID for guests with EPT
Date: Thu, 12 Jul 2012 13:07:42 +0300 [thread overview]
Message-ID: <4FFEA1EE.1090502@redhat.com> (raw)
In-Reply-To: <EF5A1D57CFBD5A4BA5EB3ED985B6DC6E0A84A6@SHSMSX101.ccr.corp.intel.com>
On 07/02/2012 04:18 AM, Mao, Junjie wrote:
> This patch handles PCID/INVPCID for guests.
>
> Process-context identifiers (PCIDs) are a facility by which a logical processor
> may cache information for multiple linear-address spaces so that the processor
> may retain cached information when software switches to a different linear
> address space. Refer to section 4.10.1 in IA32 Intel Software Developer's Manual
> Volume 3A for details.
>
> For guests with EPT, the PCID feature is enabled and INVPCID behaves as running
> natively.
> For guests without EPT, the PCID feature is disabled and INVPCID triggers #UD.
>
Thanks, applied.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2012-07-12 10:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-02 1:18 [PATCH v5] KVM: x86: Implement PCID/INVPCID for guests with EPT Mao, Junjie
2012-07-12 10:07 ` Avi Kivity [this message]
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